<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>权重练习</title>
    <style>
/* .nav {
    color: red;
} */
/* 继承的权重为0 */
/* li {
    color: pink;
} */



.nav li {
    color: red;
}
/* 需求吧第一个li 颜色改为粉色加粗 */
.nav .pink {
    color: pink;
    font-weight: 700;
}
    </style>
</head>
<body>
    <ul class="nav">
        <li class="pink">人生四大悲</li>
        <li>家里没宽带</li>   
        <li>网速不够快</li>
        <li>手机没流量</li>
        <li>学校没wifi</li>
    </ul>
</body>
</html>